[Bug 93166] [drm] GPU HANG: ecode 8:0:0x85dffffb, in steam [3539], reason: Ring hung, action: reset

Mon Dec 7 01:58:03 PST 2015

https://bugs.freedesktop.org/show_bug.cgi?id=93166

--- Comment #6 from Sören Beye <bugs.freedesktop.org at hypfer.de> ---
(In reply to Mika Kuoppala from comment #5)
> (In reply to Sören Beye from comment #2)
> > Created attachment 120225 [details]
> > Gpu Crash Dump
> 
> If the problem is easily reproduced, could you try how it behaves
> with i915.enable_hangcheck = 0

The GUI is now completely unresponsive, but I could ssh into the machine to get
the logs

Dec  7 10:53:51 ishimura kernel: [  107.771877] ------------[ cut here
]------------
Dec  7 10:53:51 ishimura kernel: [  107.771898] WARNING: CPU: 2 PID: 0 at
drivers/gpu/drm/i915/intel_uncore.c:620
hsw_unclaimed_reg_debug.isra.11+0x62/0x78 [i915]()
Dec  7 10:53:51 ishimura kernel: [  107.771899] Unclaimed register detected
before reading register 0x223a0
Dec  7 10:53:51 ishimura kernel: [  107.771900] Modules linked in: md4 nls_utf8
cifs nfsv3 vmnet(O) binfmt_misc cpufreq_userspace cpufreq_conservative
cpufreq_powersave cpufreq_stats vsock(O) vmci(O) vmmon(O) nfsd auth_rpcgss
oid_registry nfs_acl nfs lockd grace fscache sunrpc ch341 usbserial
snd_hda_codec_hdmi x86_pkg_temp_thermal arc4 kvm_intel brcmsmac kvm cordic
brcmutil b43 mac80211 cfg80211 ssb mmc_core usb_storage rfkill rng_core pcmcia
pcmcia_core sha256_generic hmac joydev iTCO_wdt iTCO_vendor_support drbg
ansi_cprng evdev aesni_intel aes_x86_64 bcma ablk_helper cryptd lrw gf128mul
zram glue_helper lz4_compress lpc_ich pcspkr i2c_i801 mfd_core zsmalloc shpchp
snd_hda_codec_realtek snd_hda_codec_generic battery i915 snd_hda_intel video
snd_hda_codec drm_kms_helper snd_hda_core snd_hwdep drm snd_pcm i2c_algo_bit
snd_timer i2c_core snd soundcore button acpi_cpufreq acpi_pad processor
coretemp loop fuse parport_pc ppdev lp parport autofs4 hid_generic usbhid hid
ext4 crc16 jbd2 mbcache microcode sg sd_mod crc32c_intel ahci libahci libata
scsi_mod ehci_pci ehci_hcd xhci_pci r8169 xhci_hcd mii usbcore usb_common
thermal fan thermal_sys
Dec  7 10:53:51 ishimura kernel: [  107.771956] CPU: 2 PID: 0 Comm: swapper/2
Tainted: G           O    4.2.6 #1
Dec  7 10:53:51 ishimura kernel: [  107.771957] Hardware name: To be filled by
O.E.M. To be filled by O.E.M./CRESCENTBAY, BIOS 5.6.5 08/29/2015
Dec  7 10:53:51 ishimura kernel: [  107.771959]  0000000000000000
0000000000000009 ffffffff813c8003 ffff88021ed03d78
Dec  7 10:53:51 ishimura kernel: [  107.771961]  ffffffff81042ce2
0000000000000006 ffffffffa03e0a2e 0000000000000001
Dec  7 10:53:51 ishimura kernel: [  107.771963]  ffff880215790078
00000000000223a0 00000000000223a0 ffff880215790078
Dec  7 10:53:51 ishimura kernel: [  107.771965] Call Trace:
Dec  7 10:53:51 ishimura kernel: [  107.771966]  <IRQ>  [<ffffffff813c8003>] ?
dump_stack+0x40/0x50
Dec  7 10:53:51 ishimura kernel: [  107.771972]  [<ffffffff81042ce2>] ?
warn_slowpath_common+0x98/0xb0
Dec  7 10:53:51 ishimura kernel: [  107.771984]  [<ffffffffa03e0a2e>] ?
hsw_unclaimed_reg_debug.isra.11+0x62/0x78 [i915]
Dec  7 10:53:51 ishimura kernel: [  107.771986]  [<ffffffff81042d92>] ?
warn_slowpath_fmt+0x45/0x4a
Dec  7 10:53:51 ishimura kernel: [  107.771996]  [<ffffffffa03e0a2e>] ?
hsw_unclaimed_reg_debug.isra.11+0x62/0x78 [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772006]  [<ffffffffa03e13a4>] ?
gen6_read32+0x43/0xae [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772017]  [<ffffffffa03d9e7c>] ?
intel_lrc_irq_handler+0x30/0x186 [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772026]  [<ffffffffa03e3047>] ?
gen8_write32+0x98/0xb2 [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772035]  [<ffffffffa03e2faf>] ?
gen8_write64+0xb0/0xb0 [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772045]  [<ffffffffa03d3824>] ?
gen8_gt_irq_handler+0x69/0x1bd [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772053]  [<ffffffffa03d39e2>] ?
gen8_irq_handler+0x6a/0x3e5 [i915]
Dec  7 10:53:51 ishimura kernel: [  107.772056]  [<ffffffff8107b151>] ?
handle_irq_event_percpu+0x4f/0x179
Dec  7 10:53:51 ishimura kernel: [  107.772058]  [<ffffffff8107b2aa>] ?
handle_irq_event+0x2f/0x55
Dec  7 10:53:51 ishimura kernel: [  107.772060]  [<ffffffff8107da36>] ?
handle_edge_irq+0xb1/0xd0
Dec  7 10:53:51 ishimura kernel: [  107.772062]  [<ffffffff810050a4>] ?
handle_irq+0x18/0x20
Dec  7 10:53:51 ishimura kernel: [  107.772064]  [<ffffffff81004ae5>] ?
do_IRQ+0x41/0xb1
Dec  7 10:53:51 ishimura kernel: [  107.772066]  [<ffffffff813ccba8>] ?
common_interrupt+0x68/0x68
Dec  7 10:53:51 ishimura kernel: [  107.772067]  <EOI>  [<ffffffff8108815e>] ?
hrtimer_start_range_ns+0x24c/0x25b
Dec  7 10:53:51 ishimura kernel: [  107.772072]  [<ffffffff812e98ed>] ?
cpuidle_enter_state+0x103/0x170
Dec  7 10:53:51 ishimura kernel: [  107.772074]  [<ffffffff812e98af>] ?
cpuidle_enter_state+0xc5/0x170
Dec  7 10:53:51 ishimura kernel: [  107.772076]  [<ffffffff8106c5e8>] ?
cpu_startup_entry+0x182/0x226
Dec  7 10:53:51 ishimura kernel: [  107.772077] ---[ end trace 89c1289c7bb65dfb
]---

Other than that:
root at ishimura:~# cat /sys/class/drm/card0/error
no error state collected

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